The AD5821A is a 120 mA I2C DAC with 10-bit resolution and current sinking capability. It is suitable for consumer and industrial applications such as lens autofocus, image stabilization, and optical zoom.
The AD5821A is a single‑channel 10‑bit digital‑to‑analog converter that sinks up to 120 mA. It operates from a single 2.7 V to 5.5 V supply and is controlled via a 2‑wire I²C‑compatible serial interface with a maximum clock rate of 400 kHz. Integrated features include an internal reference, power‑on reset, and a low‑power shutdown mode.
Typical applications include consumer lens autofocus, image stabilization, optical zoom, and various industrial control tasks such as heater, fan, and valve control. The device provides guaranteed monotonicity, low output noise, and compliance voltages suitable for driving voice‑coil linear motors.
| Resolution | 10‑bit |
|---|---|
| Supply Voltage Range | 2.7 V to 5.5 V |
| Maximum Sink Current | 120 mA |
| I²C Clock Frequency | 400 kHz max |
| Operating Temperature Range | −30 °C to +85 °C |
The AD5821A can sink up to 120 mA of current.
It operates from a single supply voltage between 2.7 V and 5.5 V.
It uses a 2‑wire I²C‑compatible serial interface with a maximum clock rate of 400 kHz.